326 BRECK’S NEW BOOK OF FLOWERS. 
mental, being large and balloon-shaped. Blue, with a 
white variety and often semi-double, Culture the same 
as that of Campanula. 
POLEMONIUM.—Greex VALERIAN. 
(From a Greek word meaning war; of doubtful application.] 
Poleménium certleum,—Jacob’s Ladder.—This is one 
of the old standard border-plants, with blue flowers. The 
common name of Jacob’s Ladder is from its beautiful pin- 
nately-cleft leaves. It has lively blue flowers, nodding on 
the ends of the branches. There is a variety with white 
flowers. It is a perfectly hardy perennial, and of easy 
cultivation, flowering in June; one and one-half foot high. 
Propagated by seeds or division of the roots. 
POLIANTHES,—Tvuvterose. 
[From the Greek words for many and flower.} 
Poliinthes tuberésa.—The Tuberose.—A native of In- 
dia, and very popular on account of its highly fragrant 
flowers. In the warmer parts of the European continent 
it thrives as well as in its native soil. In Italy, Sicily, and 
Spain, the roots thrive and propagate with ease when they 
are once planted. The Genoese cultivate it and send the 
roots annually to England, Germany, Holland, and France, 
and from thence it comes to this country. These imported 
roots thrive much better than those raised here. This 
plant has long been cultivated in English gardens for its 
extraordinary beauty and fragrance. 
